And now, how about collecting a good hefty bounty for a working effective GPU miner? I'd put down up to 1000 DRK - not much but if many people donate it'll build up.
If more people are interested I could work on GPU miner for a bounty. I already have something more or less working (pools are accepting shares, also solo-mined one block this night with it), but it's still very slow (nearly 2 MH/s on Radeon R9 290). Unfortunately I can't promise it will get much faster, still working on possible optimizations.
FYI
I'll put up 1000DRK, but I want the code you have now, to prove that it is getting at least what you say.
I'll match his 1000DRK
I can definitely make a GPU miner (how fast it will be is another question, but based on the algorithms in hand, they all parallelize pretty well, so I expect it to be reasonably fast).
But a few people offering 1000DRK isn't enough incentive. It's not the money (if it was, I'd make one for myself), I just need some more detail. Have you already got someone working on a GPU miner, for instance? I don't want to put 10 hours into this only to find that you've had someone else do it.
I've been working on this one, I'm not sure it works.